1205304113051 has 4 divisors (see below), whose sum is σ = 1205310470952. Its totient is φ = 1205297755152.

The previous prime is 1205304113033. The next prime is 1205304113087. The reversal of 1205304113051 is 1503114035021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1205304113051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1205304113051.

It is not an unprimeable number, because it can be changed into a prime (1205304133051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885561 + ... + 3276746.

It is an arithmetic number, because the mean of its divisors is an integer number (301327617738).

Almost surely, 2^{1205304113051} is an apocalyptic number.

1205304113051 is a deficient number, since it is larger than the sum of its proper divisors (6357901).

1205304113051 is an equidigital number, since it uses as much as digits as its factorization.

1205304113051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357900.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1205304113051 its reverse (1503114035021), we get a palindrome (2708418148072).

The spelling of 1205304113051 in words is "one trillion, two hundred five billion, three hundred four million, one hundred thirteen thousand, fifty-one".